I-Vinyl acetate (VAC) yinto ebalulekileyo yekhemikhali yezinto eziphilayo kunye ne-molecular formula ye-C4H6O2, eyaziwa ngokuba yi-vinyl acetate kunye ne-vinyl acetate.IVinyl acetate isetyenziswa ikakhulu kwimveliso yepolyvinyl alcohol, ethylene-vinyl acetate copolymer (EVA resin), ethylene-vinyl alcohol copolymer (EVOH resin), vinyl acetate-vinyl chloride copolymer (vinyl chloride resin), latex emhlophe, i-acrylic fiber kunye ezinye iimveliso.Isetyenziswa kakhulu kwimimandla yefayibha eyenziweyo, yokwaleka, i-slurry, ifilimu, ukusetyenzwa kwesikhumba, ukuphuculwa komhlaba, kwaye inethemba elibanzi lophuhliso kunye nokusetyenziswa.Iindlela zenkqubo ye-vinyl acetate ziquka indlela ye-carbide acetylene, indlela yegesi yendalo ye-acetylene kunye ne-petroleum ethylene method.Indlela ye-carbide acetylene isetyenziswa kakhulu e-China, kwaye amandla okuvelisa indlela ye-carbide acetylene iya kufikelela kwi-62% kwi-2020.
Kwiminyaka yakutshanje, imfuno yentengiso ye-vinyl acetate e-China ibonise umgangatho wokunyuka ngokubanzi.Ngokwezibalo ze-China Chemical Fiber Industry Association, ngo-2016, ukusetyenziswa okubonakalayo kwe-vinyl acetate e-China kwakuyi-1.94 yezigidi zeetoni, eziye zenyuka zaya kwi-2.33 yezigidi zeetoni ngo-2019. isantya sokusebenza kwamashishini asezantsi asezantsi, okukhokelela ekwehleni okuncinci kokusetyenziswa okubonakalayo kwe-vinyl acetate ukuya kwi-2.16 yezigidi zeetoni;Ngokuzinziswa kwemeko yobhubhane kwisiqingatha sesibini sonyaka kunye nokuchacha ngokukhawuleza kwemveliso yezoqoqosho, imfuno ye-vinyl acetate iphinde yachacha ngokukhawuleza ukusuka kwisiqingatha sesibini sika-2020 ukuya kwisiqingatha sokuqala sika-2021, ixabiso lentengiso lenyuke kakhulu imboni yachacha.
Isakhiwo semfuno ye-vinyl acetate e-China izinzile, kunye ne-polyvinyl alcohol, i-polyvinyl acetate, i-VAE lotion kunye ne-EVA resin njengemveliso ephambili.Ngo-2020, umlinganiselo we-polyvinyl alcohol kwisakhiwo sokusetyenziswa kwasekhaya kwe-vinyl acetate uya kufikelela kwi-65%, kwaye umlinganiselo we-polyvinyl acetate, i-VAE lotion kunye ne-EAV resin iya kuba yi-31%.
Okwangoku, iChina inomthamo omkhulu wevinyl acetate emhlabeni.Ngo-2020, umthamo waseTshayina we-vinyl acetate uya kufikelela kwi-2.65 yezigidi zeetoni, kubalwa malunga ne-40% yomthamo opheleleyo wehlabathi.Kwiminyaka yakutshanje, umthamo wasemva kwishishini le-vinyl acetate laseTshayina liye larhoxa kancinci, kwaye nomthamo ophucukileyo wongezwa ukuzalisa isithuba semarike.Ngokuqhubekeka kolwakhiwo lonikezelo lweshishini, imveliso yevinyl ye-acetate yaseTshayina ibonise ukukhula ngokubanzi.Ngokwezibalo ze-China Chemical Fiber Industry Association, imveliso ye-vinyl ye-acetate yasekhaya iye yanda ukusuka kwi-1.91 yezigidi zeetoni ngo-2016 ukuya kwi-2.28 yezigidi zeetoni ngo-2019, kunye nezinga lokukhula lonyaka elihlanganisiweyo ye-5.98%;Ngo-2020, ngenxa yexabiso le-oyile ephantsi yamazwe ngamazwe, iindleko zemveliso ye-petroleum ethylene indlela yaphesheya yancitshiswa, ukungenisa kwe-vinyl acetate e-China kwanda, kwaye ukuveliswa kwe-vinyl acetate yasekhaya yehla ukuya kwi-1.99 yezigidi zeetoni;Ukusukela kwisiqingatha sesibini sika-2020, kunye nokunyuka koqoqosho lwehlabathi kunye nokunyuka kwamaxabiso eoli kumazwe ngamazwe, ukuveliswa kweshishini le-vinyl acetate lasekhaya liye lafudumala.